1243055741 has 2 divisors, whose sum is σ = 1243055742. Its totient is φ = 1243055740.

The previous prime is 1243055731. The next prime is 1243055747. The reversal of 1243055741 is 1475503421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 703840900 + 539214841 = 26530^2 + 23221^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243055741 - 2¹⁰ = 1243054717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1243055698 and 1243055707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243055747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621527870 + 621527871.

It is an arithmetic number, because the mean of its divisors is an integer number (621527871).

Almost surely, 2^1243055741 is an apocalyptic number.

It is an amenable number.

1243055741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243055741 is an equidigital number, since it uses as much as digits as its factorization.

1243055741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 1243055741 is about 35256.9956320728. The cubic root of 1243055741 is about 1075.2188459442.

The spelling of 1243055741 in words is "one billion, two hundred forty-three million, fifty-five thousand, seven hundred forty-one".